When Charles Manson and members of his cult killed Sharon Tate, the wife of Roman Polanski, and others at their Hollywood home, it send shockwaves through Lala Land.

Taratino’s new movie will explore the hedonistic last days of the 1960s and he has made no secret of which A-list beauty he wants to play the tragic leading lady.

After months of talk, Robbie is set to sign up and “now has the offer and negotiations are underway.”

Deadline reported: “Quentin Tarantino had met with Margot Robbie and asked her to play Sharon Tate in his next film. She now has the offer and negotiations are underway to make it a reality.”

This would reunite Robbie with her Wolf of Wall Street co-star Leonardo DiCaprio once more.

The film will be called Once Upon A Time In Hollywood and is a passion project for the director, although Tarantino has already been accused of trying to sensationalise and profit from the terrible Manson killing spree.

Instead, he has explained that his movie is not directly about the murders which hit headlines across the world.

Tarantino told The Hollywood Reporter: “[It’s] a story that takes place in Los Angeles in 1969, at the height of hippy Hollywood.

The two lead characters are Rick Dalton (Leonardo DiCaprio), former star of a Western TV series, and his longtime stunt double Cliff Booth (Brad Pitt). Both are struggling to make it in a Hollywood they don’t recognise anymore. But Rick has a very famous next-door neighbour…Sharon Tate.”